For a black dot, use these settings:cl_crosshairusealpha 1 // default is 1, this must be set to 1 for black to work
cl_crosshairalpha 500 // default is 100, 500 will make it opaque
cl_crosshaircolor 5 // default is 1, 5 uses the RGB values below
cl_crosshaircolor_r 0 // default is 50
cl_crosshaircolor_g 0 // default is 250
cl_crosshaircolor_b 0 // default is 50
Now, you have a black crosshair!!!